The universe
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THE UNIVERSE How we came to understand it from the theories of the large and the theories of the small by Mike Petersen
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Transcript of The universe
THE UNIVERSE
How we came to understand itfrom the theories of the largeand the theories of the small
byMike Petersen
The Universe Large
• The Universe is 13.7 BYO.• It is huge beyond imagination.• It is expanding.• How did we figure this out?
The Universe Large
• Ptolemy and the Geocentric Theory• 2000 years ago
The Universe Large
• Copernicus and the Heliocentric Theory• 500 years ago
The Universe Large
• Galileo and the Telescope• 400 years ago
The Universe Large
• Newton and the Law of Gravity• 350 years ago
The Universe Large
• Einstein and the Theory of Relativity• 100 years ago
The Universe Large
• Special and General Theories of Relativity• Einstein meshed space, time, energy, matter
The Universe Large
• Gravity is warped space-time• Orbits are space-time straight lines
The Universe Large
• Light bends in warped space-time• Proof of General Theory of Relativity - 1922
The Universe Large
• Hubble – Galaxies, Redshift, Expansion• 90 years ago
The Universe Large
• VLT Array – Atacama Desert, Chile• 1995-2005 – Interferometry (8.2M x 4)
The Universe Large
• Keck Telescope on Mauna Kea in Hawaii• 1993 – (10M x 2)
The Universe Large
• Hubble Space Telescope• 1990-2020 – 2.4M
The Universe Large
• James Webb Space Telescope• 2018 – 6.5M Long Wavelength Light to Infrared
The Universe Large
• Big Bang Theory – Plagued by problems• 1927 – Georges Lemaître – 1980 Alan Guth
The Universe Small
• The Universe is 13.7 BYO.• It is small beyond imagination.• It is expanding.• How did we figure this out?• 1.61619926 × 10-35 M
The Universe Small
• Rutherford and the Atom• 110 years ago
The Universe Small
• Bohr and discrete Electron Orbits in the Atom• 100 years ago
The Universe Small
• The Standard Model of Particle Physics• Last 100 years
The Universe Small
• How the sun works – (Nuclear Fusion)• 80 years ago
The Universe Small
• How the sun works – (Nuclear Fusion)• 50 years ago
The Universe Small
• How the sun works – (Nuclear Fusion)• 40-50 years ago
The Universe Large and Small
• We don’t understand a LOT• Dark Matter – Dark Energy• The ‘Lithium Problem’• Quantum Theory and General Relativity• String Theory?• Parallel Universes
